Results 1 to 10 of about 194 (68)

A survey of aquatic macroinvertebrates in a river from the dry corridor of Nicaragua using biological indices and DNA barcoding [PDF]

open access: yesEcology and Evolution, 2022
Aquatic macroinvertebrates are widely used as indicators for water quality assessment around the world. Modern strategies for environmental assessment implement molecular analysis to delimitate species of aquatic macroinvertebrates.
Bryant H. Mendoza‐Ramírez   +4 more
doaj   +2 more sources

What Works? the Influence of Changing Wastewater Treatment Type, Including Tertiary Granular Activated Charcoal, on Downstream Macroinvertebrate Biodiversity Over Time. [PDF]

open access: yesEnviron Toxicol Chem, 2019
Transformation in the fortunes of a macroinvertebrate population in a wastewater dominated river. ASPT = average score per taxon; LOQ = limit of quantification. Abstract The present study reviewed the impacts of wastewater on macroinvertebrates over 4 decades in a United Kingdom lowland river.
Johnson AC   +5 more
europepmc   +2 more sources

Estrategia de monitoreo hídrico comunitario para la microcuenca río Jorco basado en el análisis de indicadores fisicoquímicos, microbiológicos y biológicos de la calidad de agua

open access: yesTecnología en Marcha, 2023
Las profundas deficiencias que enfrenta el país en políticas de gestión hídrica se reflejan en la contaminación fisicoquímica, microbiológica y biológica de los ríos nacionales. El objetivo de este estudio fue proponer una estrategia de monitoreo hídrico
Guillermo Calvo-Brenes   +1 more
doaj   +1 more source

Disentangling responses to natural stressor and human impact gradients in river ecosystems across Europe

open access: yesJournal of Applied Ecology, Volume 59, Issue 2, Page 537-548, February 2022., 2022
Metrics are needed to assess the ecological status of dynamic river ecosystems—including those that sometimes dry—and thus to identify priority sites requiring action to tackle the causes of environmental degradation. Our results inform recommendations guiding the development of such metrics.
Rachel Stubbington   +30 more
wiley   +1 more source

Agricultural pesticides pose a continuous ecotoxicological risk to aquatic organisms in a tropical horticulture catchment

open access: yesEnvironmental Advances, 2023
Pesticides are used throughout the tropics in large amounts to protect crops against pests and weeds. These chemicals may be lost to the aquatic environment and impair its ecological status and the water quality for human consumption.
Frederik T. Weiss   +4 more
doaj   +1 more source

Taxonomic and Functional Diversity of Aquatic Macroinvertebrate Assemblages and Water Quality in Rivers of the Dry Tropics of Costa Rica

open access: yesFrontiers in Environmental Science, 2021
One of Costa Rica’s driest areas is the province of Guanacaste, in the Pacific Northwest, with almost no rain during the dry season from November to April.
Bert Kohlmann   +4 more
doaj   +1 more source

Water quality evaluation using physicochemical and biological indices to characterize the integrity of the Orogodo River in sub-Saharan Africa

open access: yesFrontiers in Environmental Chemistry, 2022
The preliminary consequence of pollutants in water is to reduce the quality of water although this may not be immediately noticeable because of the self-purifying ability of some water bodies.
John Ovie Olomukoro   +4 more
doaj   +1 more source

Challenges Using Extrapolated Family-level Macroinvertebrate Metrics in Moderately Disturbed Tropical Streams: a Case-study From Belize [PDF]

open access: yes, 2017
Family-level biotic metrics were originally designed to rapidly assess gross organic pollution effects, but came to be regarded as general measures of stream degradation.
A Yates   +77 more
core   +4 more sources

Performance of selected macroinvertebrate-based biotic indices for rivers draining the Merendon Mountains region of Honduras

open access: yesCuadernos de investigación UNED, 2013
Cusuco National Park, a cloud forest park situated in the Merendon Mountains region of Honduras, is home to considerable biodiversity with a very high degree of endemism.
Paul O’Callaghan, Mary Kelly-Quinn
doaj   +1 more source

Bioindicadores da qualidade da água em riachos com diferentes coberturas ripícolas na microbacia hidrográfica de Guapara, Equador [PDF]

open access: yes, 2022
Agricultural activities produce changes in the margins of the stream banks, causing disturbances in water quality, and in the assemblage of aquatic insect communities.
Arriaga, Gabriela   +5 more
core   +1 more source

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